Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Additional Information (Details)

v3.20.1
Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Summary Of Significant Accounting Policies [Line Items]      
Impairment losses $ 0    
Reduction of research and development expenses 635,000 $ 5,000 $ 499,000
Research and development tax credit receivable 642,000 $ 5,000  
Interest charges or penalties related to unrecognized tax benefits $ 0    
Furniture, Laboratory and Office Equipment | Minimum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of the assets 5 years    
Furniture, Laboratory and Office Equipment | Maximum      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of the assets 7 years    
Computer Equipment      
Summary Of Significant Accounting Policies [Line Items]      
Estimated useful lives of the assets 3 years    
Australia      
Summary Of Significant Accounting Policies [Line Items]      
Concentrations of credit risk $ 200,000